A kind of recycling method of beryllium in beryllium waste liquid measured by beryllium loading method

A technology of waste liquid, beryllium hydroxide, applied in chemical instruments and methods, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc. and other problems, to achieve the effect of reducing pollution, saving laboratory costs, and saving reagent costs

Active Publication Date: 2021-09-21
江钨世泰科钨品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the waste liquid after measuring P by the beryllium loading method is directly discharged outside, causing environmental pollution
Although the concentration of beryllium-containing wastewater is not high, due to the strong toxicity and continuous effect of beryllium and its compounds, even trace amounts can cause poisoning and cause pharyngitis, loss of voice and other diseases

Method used

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  • A kind of recycling method of beryllium in beryllium waste liquid measured by beryllium loading method
  • A kind of recycling method of beryllium in beryllium waste liquid measured by beryllium loading method
  • A kind of recycling method of beryllium in beryllium waste liquid measured by beryllium loading method

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Take 2500mL of P waste solution (GB / T6150.3-2009) in a 3000mL beaker, heat it on an electric furnace to concentrate the volume to about 800-1000mL, take it out and cool it slightly, and add liquid alkali to pH approx. 6. Add ammonia water to pH 8.5-9 to completely precipitate beryllium hydroxide, heat to boiling, filter with a Buchner funnel while hot, wash the precipitate with hot ammonia water-ammonium nitrate mixture for 10 times, and transfer the precipitate into a beaker. Add 8mL nitric acid to dissolve, dilute to 200mL after dissolving, then add ammonia water to pH 8.5~9, make beryllium hydroxide precipitate completely, heat to boiling, filter with Buchner funnel while hot, and use hot ammonia water-ammonium nitrate mixture Wash the precipitate 10 times, transfer the precipitate into a beaker, add 8mL nitric acid to dissolve, and dilute to 400mL after dissolution, which is used for the phosphorus removal step of the determination of tungsten trioxide in high-phosph...

Embodiment 2

[0023] Take 2500mL of P waste solution (GB / T4324.24-2012) in a 3000mL beaker, heat it on an electric furnace to concentrate the volume to about 800-1000mL, take it out and cool it slightly, add NaOH solution (500g / L) to pH about 6, add ammonia water to pH 8.5-9, make the precipitation of beryllium hydroxide complete, heat to boiling, filter with Buchner funnel while hot, wash the precipitate 10 times with hot ammonia water-ammonium sulfate mixed solution, put Move the precipitate into a beaker, add 6mL sulfuric acid to dissolve, dilute to 200mL after dissolving, then add ammonia water to pH8.5~9, make the beryllium hydroxide precipitate completely, heat to boiling, filter with Buchner funnel while hot, and use hot ammonia water -Wash the precipitate with ammonium sulfate mixture 10 times, transfer the precipitate into a beaker, add 6mL of sulfuric acid to dissolve, dilute to 400mL after dissolving, transfer to a 500mL separatory funnel, add 25mL of ammonium molybdate solution ...

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Abstract

The invention discloses a method for recovering and reusing beryllium in the waste liquid of P measured by the beryllium loading method. The method comprises the following steps: placing the waste liquid containing beryllium after measuring P by the beryllium loading method in a 3000mL beaker, heating and concentrating on an electric furnace Volume, neutralized with alkali, then add ammonia water until beryllium hydroxide precipitates completely; filter with Buchner funnel, wash the precipitate with ammonia water-ammonium nitrate solution or ammonia water-ammonium sulfate solution for 10 times, transfer the precipitate into a beaker, add nitric acid or sulfuric acid Dissolve the precipitate; add ammonia water until the beryllium hydroxide precipitates completely, filter again with a Buchner funnel, wash the precipitate with ammonia water-ammonium nitrate solution or ammonia water-ammonium sulfate solution 10 times, transfer the precipitate into a beaker, add nitric acid or sulfuric acid to dissolve the precipitate. The invention is simple and easy to implement and low in cost. The beryllium salt is recovered and then used for the determination of P, or used for the phosphorus removal step of the determination of tungsten trioxide in high-phosphorus tungsten ore. The beryllium waste liquid is discharged outside, causing the disadvantage of beryllium polluting the environment, and greatly saving the cost of reagents.

Description

technical field [0001] The invention relates to the technical field of recovery and reuse of beryllium salts, in particular to a method for recovery and reuse of beryllium in P waste liquid measured by a beryllium loading method. Background technique [0002] At present, the determination method of P, whether it is the phosphomolybdenum yellow spectrophotometry method of constant P in ore or the phosphomolybdenum blue spectrophotometry method of trace P in tungsten products, basically uses beryllium hydroxide as the carrier to precipitate P. Determination of tungsten trioxide in high phosphorus tungsten ore, the phosphorus removal step also uses beryllium hydroxide as a carrier to precipitate P. The beryllium salt in P measured by the beryllium loading method only acts as a carrier and does not participate in the reaction itself. Therefore, the beryllium salt does not decrease before and after the analysis, and all the added beryllium salt is in the waste liquid. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/26C02F1/5236C02F1/66C02F9/00C02F2301/08
Inventor 彭玲吴日亮吴爽
Owner 江钨世泰科钨品有限公司
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